PG_arch_1          19 arch/x86/include/asm/cacheflush.h #define _PGMT_WC		(1UL << PG_arch_1)
PG_arch_1          21 arch/x86/include/asm/cacheflush.h #define _PGMT_WB		(1UL << PG_uncached | 1UL << PG_arch_1)
PG_arch_1          22 arch/x86/include/asm/cacheflush.h #define _PGMT_MASK		(1UL << PG_uncached | 1UL << PG_arch_1)